Leaching apparatus.



No. 787,902. PATBNTED APR. 25, 1905.

o. E. DEWEY.

LEAOHING APPARATUS.

APPLIUATION FILED AUG. a, 1904.

zsHBBTs-SHBBT 1.

'Il III PATENTBD APR. 25, 1905.

C. E. DEWEY.

LEAGHING APPARATUS.

APPLICATION FILED AUG. 3, 1904.

2 SHEETS-SHEET 2` @mum/Mofa lINiTED STATES ATENT Patented April 25,1905.

FFICE.

CIIAUNCEY E. DEW IY, OF DENVER, COLORADO, ASSIG-NOR TO THE A MERI- CANZINC AND CHEMICAL COMPANY, OF DENVER, COLORADO.

LEACHING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 787,902, dated April25, 1905.

Application filed August 3,1904. Serial No. 219,295.

To /17/ /r/mm rt 7mo/y concern:

Be it known that I, C'I'IAUNCEY E. Dnwnv, a citizen of the UnitedStates, residing in the city and county of Denver and State of Colorado,haveinvented certain new and useful Improvements in Leaching Apparatus;and Ido declare the following to be a full, clear, and exact'lescription of the invention, such as will enable others skilled in theart to which it ap- 1o pertains to make and use the same, referencebeing had to the accompanying d rawings, and

to the letters of reference marked thereon,-

whieh form a part of this specification.

My invention relates to imprtwements in chemicals are introduced intothe bottom of the pulp to be leached and directed upwardly into the pulpfor the purpose of maintaining the ore in suspension during the leachingoperation. In processes of this character the chemicals employed are ofsuch a nature that a lead conduit is generally employed for introducingthe chemicals into the ore, since this material resists the action ofthe chemicalsl which would attack ordinary metals, as iron, and soondestroy them. rllhe lead, however, is so so ft that if it is simplyperforated the ehemi ads being introduced in the form of lluid underpressure have a tendency to pass through the orifices at an angle to theperpendicular, and this tendency gradually enlarges the orifices in thelead pipe, and this enlargement is in a longitudinal direction orlengthwise with the pipe, thus virtually forming an elongated openingwhereby in a comparatively short time the pipe is so' worn away that aslot will be formed therein connecting the orilices and virtuallydestroying the pipe. In order to overcome this difliculty, I haveconceived the idea of providing the lead pipe with oriliced nozzlesof'suflicient length to cause the agitating fluid to pass upwardly intothe tank in vertical jets, the said nozzles being formed of lead or thesame mathat will be rea lily understood. '.lhese nozleaching' apparatusadapted Vfor use where' i extremity of each nozzle a tip of porcelain orterial as the pipe and burned on in a manner I other suitable material,which is molded into or otherwise suitably connected with the noz- Thisporcelain tip is provided with a central orifice, and afterward the leadis bored in line with the orilice in the porcelain tip to permit theescape of upwardly-directed fluidiets Vfrom the pipe when the fluids areintroduced thereto under suitable pressure Yfor leaching' purposes.

Having briefly outlined my improved construction, as well as thefunction it is intended to perform, l will proceed to describe the samein detail, reference being made tothe accompanying drawings, in which isillustrated an embodiment thereof.

In the drawings, Figure l is a side view of my improved leaching-tank,the same being shown partly in elevation and partly in verticallongitudinal section. Eig. 2 is a crosssection of the tank on the line Q2. Fig. l. Fig. 3 is a cross-section of the conduit in the bottom of thetank shown on a larger scale. Eig. 4c is a detail view of the porcelainor other tip employed in connection with the vertically-disposed nozzlesof the pipe or conduit.

'lhe same re ference characters indicate the same parts in all theviews.

Let A designate my improved leachingtank considered in its entirety.'lhis tank is V-shaped in cross-section, and its side walls aresupported by beams or bars Ai, applied thereto and connected by top andbottom tierods A and A, nuts AH being applied to the threadedextremities of the rods and screwed againstsuitable washers A, which arelocated 90 in recesses A", formed in thel lower extremities of the beamsA, or engage flattened portions A thereof, as shown at the top of thetank in `Fig. l of the drawings. In the bottom of this V-shaped tank andextending longi- 95 tudinally thereof is a strip A, forming a supportYfor the lead conduit B, provided with vertically-disposcd nozzles I,which may be provided with the porcelain tips B2 or not, as may bedesired. In any event, these nozzles are provided with centralvertically-disposed orifices through which the Huid introduced into theconduit B under pressure is directed upwardly into the contents C of thetank in vertical jets, whereby the ore in the tank is held in suspensionin the liquid or pulp with which it is mingled. The length of thenozzles B is such that the iuid is compelled to escape from the nozzlesin upright or perpendicular jets, and this result is necessary in orderto maintain the suspension ofthe ore particles in the tank, thissuspended condition being required in order to get proper leachingresults, since by keeping the ore particles in suspension the packing ofthe ore in the tank is prevented and the leaching solution thereby isgiven the best possible chance to act upon the ore particles, since thesaid particles are continually surrounded by and in direct contact withthe dissolving solution or liquid.

Having thus described my invention, what I claim isw l. In a leachingapparatus, the combination of a tank V-shaped in cross-section, and alead conduit located in the bottom of the tank and provided withvertically-disposed orificed nozzles, the said nozzles being ofsuiiicient length to cause the iiuid introduced -into the conduit to becarried upwardly into the tank in vertical jets or streams.

2. In a leaching apparatus, the combination of a tank V-shaped incross-section and provided with a longitudinally disposed softmetalconduit located in the bottom of the tank and provided withvertically-disposed oriced nozzles, the said nozzles having tips ofharder material applied thereto, substantially as described and for thepurpose set forth.

3. The combination of a V-shaped tank provided with a lead conduitlocated in the bottom ofthe tank and extending the entire lengththereof, the said conduit being provided with oriiiced nozzles locatedin a straight line, the said nozzles having tips of harder material forthe purpose set forth.

4. The combination with a V-shaped tank provided with a conduit locatedin the bottom of the tank, the said conduit being provided withupwardly-projecting oriiiced nozzles.

5. The combination of a V-shaped tank provided with a conduit located inthe bottom of the tank and extending the entire length or approximatelythe entire length thereof, the said conduit being provided withupwardlyprojecting oriiced nozzles radially disposed with reference tothe aXis of the conduit.

6. The combination witha tank, of a conduit located in the tank andprovided with upwardly-projecting oriiiced nozzles having tips of hardermaterial than the body of the nozzles.

In testimony whereof I alix my signature in presence of two witnesses.

CHAUNCEY DEI/VEY.

Witnesses:

DENA N ELsoN, A. J. OBRIEN.

